/Engine/Plugins/Experimental/Mutable/Source/CustomizableObjectEditor/Public/MuCOE/CustomizableObjectWidget.h
Utility for calculating drag direction when you click on this widget.
void CalcVectors ( [FSceneView](API\Runtime\Engine\FSceneView) * SceneView, FVector & LocalManDir, FVector & WorldManDir, float & DragDirX, float & DragDirY )